diff --git a/platformio/commands/debug/client.py b/platformio/commands/debug/client.py
index 7e9aebb9..ac97243f 100644
--- a/platformio/commands/debug/client.py
+++ b/platformio/commands/debug/client.py
@@ -20,7 +20,10 @@ from hashlib import sha1
 from os.path import abspath, basename, dirname, isdir, join, splitext
 from tempfile import mkdtemp
 
-from twisted.internet import protocol, reactor, stdio, task
+from twisted.internet import protocol  # pylint: disable=import-error
+from twisted.internet import reactor  # pylint: disable=import-error
+from twisted.internet import stdio  # pylint: disable=import-error
+from twisted.internet import task  # pylint: disable=import-error
 
 from platformio import app, exception, util
 from platformio.commands.debug import helpers, initcfgs
diff --git a/platformio/commands/debug/process.py b/platformio/commands/debug/process.py
index 3f1fbd22..0079e18c 100644
--- a/platformio/commands/debug/process.py
+++ b/platformio/commands/debug/process.py
@@ -15,7 +15,7 @@
 import os
 
 import click
-from twisted.internet import protocol
+from twisted.internet import protocol  # pylint: disable=import-error
 
 from platformio import util
 from platformio.commands.debug import helpers
diff --git a/platformio/commands/debug/server.py b/platformio/commands/debug/server.py
index 977fe812..ca5c2a2e 100644
--- a/platformio/commands/debug/server.py
+++ b/platformio/commands/debug/server.py
@@ -15,7 +15,7 @@
 import os
 from os.path import isdir, isfile, join
 
-from twisted.internet import reactor
+from twisted.internet import reactor  # pylint: disable=import-error
 
 from platformio import exception, util
 from platformio.commands.debug import helpers
diff --git a/platformio/commands/home/command.py b/platformio/commands/home/command.py
index 0685670a..917187fb 100644
--- a/platformio/commands/home/command.py
+++ b/platformio/commands/home/command.py
@@ -33,9 +33,11 @@ from platformio.managers.core import (get_core_package_dir,
 def cli(port, host, no_open):
     # import contrib modules
     inject_contrib_pysite()
+    # pylint: disable=import-error
     from autobahn.twisted.resource import WebSocketResource
     from twisted.internet import reactor
     from twisted.web import server
+    # pylint: enable=import-error
     from platformio.commands.home.rpc.handlers.app import AppRPC
     from platformio.commands.home.rpc.handlers.ide import IDERPC
     from platformio.commands.home.rpc.handlers.misc import MiscRPC
diff --git a/platformio/commands/home/helpers.py b/platformio/commands/home/helpers.py
index abac9416..20b9503c 100644
--- a/platformio/commands/home/helpers.py
+++ b/platformio/commands/home/helpers.py
@@ -18,8 +18,9 @@ import os
 import socket
 
 import requests
-from twisted.internet import threads
-from twisted.internet.defer import ensureDeferred
+from twisted.internet import defer  # pylint: disable=import-error
+from twisted.internet import reactor  # pylint: disable=import-error
+from twisted.internet import threads  # pylint: disable=import-error
 
 from platformio import util
 
@@ -28,7 +29,6 @@ class AsyncSession(requests.Session):
 
     def __init__(self, n=None, *args, **kwargs):
         if n:
-            from twisted.internet import reactor
             pool = reactor.getThreadPool()
             pool.adjustPoolsize(0, n)
 
@@ -39,7 +39,7 @@ class AsyncSession(requests.Session):
         return threads.deferToThread(func, *args, **kwargs)
 
     def wrap(self, *args, **kwargs):  # pylint: disable=no-self-use
-        return ensureDeferred(*args, **kwargs)
+        return defer.ensureDeferred(*args, **kwargs)
 
 
 @util.memoized(expire=5000)
diff --git a/platformio/commands/home/rpc/handlers/ide.py b/platformio/commands/home/rpc/handlers/ide.py
index d5c2bf74..5f8f31a4 100644
--- a/platformio/commands/home/rpc/handlers/ide.py
+++ b/platformio/commands/home/rpc/handlers/ide.py
@@ -14,8 +14,8 @@
 
 import time
 
-from jsonrpc.exceptions import JSONRPCDispatchException
-from twisted.internet import defer
+import jsonrpc  # pylint: disable=import-error
+from twisted.internet import defer  # pylint: disable=import-error
 
 
 class IDERPC(object):
@@ -25,7 +25,7 @@ class IDERPC(object):
 
     def send_command(self, command, params):
         if not self._queue:
-            raise JSONRPCDispatchException(
+            raise jsonrpc.exceptions.JSONRPCDispatchException(
                 code=4005, message="PIO Home IDE agent is not started")
         while self._queue:
             self._queue.pop().callback({
diff --git a/platformio/commands/home/rpc/handlers/misc.py b/platformio/commands/home/rpc/handlers/misc.py
index d7deff19..d3b53383 100644
--- a/platformio/commands/home/rpc/handlers/misc.py
+++ b/platformio/commands/home/rpc/handlers/misc.py
@@ -16,8 +16,8 @@ import json
 import re
 import time
 
-from bs4 import BeautifulSoup
-from twisted.internet import defer, reactor
+from bs4 import BeautifulSoup  # pylint: disable=import-error
+from twisted.internet import defer, reactor  # pylint: disable=import-error
 
 from platformio import app
 from platformio.commands.home import helpers
diff --git a/platformio/commands/home/rpc/handlers/os.py b/platformio/commands/home/rpc/handlers/os.py
index f581c469..780dbec8 100644
--- a/platformio/commands/home/rpc/handlers/os.py
+++ b/platformio/commands/home/rpc/handlers/os.py
@@ -22,7 +22,7 @@ from functools import cmp_to_key
 from os.path import expanduser, isdir, isfile, join
 
 import click
-from twisted.internet import defer
+from twisted.internet import defer  # pylint: disable=import-error
 
 from platformio import app, util
 from platformio.commands.home import helpers
diff --git a/platformio/commands/home/rpc/handlers/piocore.py b/platformio/commands/home/rpc/handlers/piocore.py
index 85255a9c..80a642cb 100644
--- a/platformio/commands/home/rpc/handlers/piocore.py
+++ b/platformio/commands/home/rpc/handlers/piocore.py
@@ -19,8 +19,8 @@ import os
 import re
 import sys
 
-from jsonrpc.exceptions import JSONRPCDispatchException
-from twisted.internet.utils import getProcessOutputAndValue
+import jsonrpc  # pylint: disable=import-error
+from twisted.internet import utils  # pylint: disable=import-error
 
 from platformio import __version__, util
 from platformio.commands.home import helpers
@@ -37,9 +37,9 @@ class PIOCoreRPC(object):
                     arg, util.string_types) else str(arg) for arg in args
             ]
         except UnicodeError:
-            raise JSONRPCDispatchException(
+            raise jsonrpc.exceptions.JSONRPCDispatchException(
                 code=4002, message="PIO Core: non-ASCII chars in arguments")
-        d = getProcessOutputAndValue(
+        d = utils.getProcessOutputAndValue(
             helpers.get_core_fullpath(),
             args,
             path=(options or {}).get("cwd"),
@@ -73,7 +73,7 @@ class PIOCoreRPC(object):
 
     @staticmethod
     def _call_errback(failure):
-        raise JSONRPCDispatchException(
+        raise jsonrpc.exceptions.JSONRPCDispatchException(
             code=4003,
             message="PIO Core Call Error",
             data=failure.getErrorMessage())
diff --git a/platformio/commands/home/rpc/handlers/project.py b/platformio/commands/home/rpc/handlers/project.py
index 02961ed8..2a4c4032 100644
--- a/platformio/commands/home/rpc/handlers/project.py
+++ b/platformio/commands/home/rpc/handlers/project.py
@@ -21,7 +21,7 @@ import time
 from os.path import (basename, expanduser, getmtime, isdir, isfile, join,
                      realpath, sep)
 
-from jsonrpc.exceptions import JSONRPCDispatchException
+import jsonrpc  # pylint: disable=import-error
 
 from platformio import exception, util
 from platformio.commands.home.rpc.handlers.app import AppRPC
@@ -189,7 +189,7 @@ class ProjectRPC(object):
             for ext in ("ino", "pde")
         ])
         if not is_arduino_project:
-            raise JSONRPCDispatchException(
+            raise jsonrpc.exceptions.JSONRPCDispatchException(
                 code=4000,
                 message="Not an Arduino project: %s" % arduino_project_dir)
 
@@ -265,7 +265,7 @@ class ProjectRPC(object):
     @staticmethod
     def import_pio(project_dir):
         if not project_dir or not util.is_platformio_project(project_dir):
-            raise JSONRPCDispatchException(
+            raise jsonrpc.exceptions.JSONRPCDispatchException(
                 code=4001,
                 message="Not an PlatformIO project: %s" % project_dir)
         new_project_dir = join(
diff --git a/platformio/commands/home/rpc/server.py b/platformio/commands/home/rpc/server.py
index cd4f05b9..bf339994 100644
--- a/platformio/commands/home/rpc/server.py
+++ b/platformio/commands/home/rpc/server.py
@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# pylint: disable=import-error
+
 import json
 
 import jsonrpc
diff --git a/platformio/commands/home/web.py b/platformio/commands/home/web.py
index 313ce084..df48b1fa 100644
--- a/platformio/commands/home/web.py
+++ b/platformio/commands/home/web.py
@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from twisted.internet import reactor
-from twisted.web import static
+from twisted.internet import reactor  # pylint: disable=import-error
+from twisted.web import static  # pylint: disable=import-error
 
 
 class WebRoot(static.File):